Legend, is more than 4,000 years ago in the ancient Yao and Shun when the time of prosperity, Yao days in the reign of the people diligently in the people to do a lot of good things, very much loved by the majority of people, but because of his son is not too talented not too into the tool, he did not pass the "son of heaven" throne to his own son, but passed on to the virtue and talent of the Shun. Yao said to Shun, "Yuan Dan, you must pass on the throne well, so that when I die, I can rest in peace and rest in peace. Later, Shun passed the throne to Yu, who had been successful in curing the flood, and Yu did a lot of good things for the people as Shun did, and was very much loved by the people. Later, people regarded the day when Emperor Shun offered sacrifices to heaven and earth and the late Emperor Yao after Yao's death as the beginning of the year, and called the first day of the first month "New Year's Day".